Overview: Food is the most important thing for the people, and food is based on the field. China uses less than 9% of the world's arable land to feed nearly one-fifth of the world's population. How did this farming miracle come true? This episode goes into the big granary on the black land, the Chengdu Plain, the land of abundance, the Jianghan Plain, the Pearl River Delta, and the Yangtze River Delta, to see the agricultural scene of the vast land with abundant grains and thriving animals, and reveals the ecological wisdom contained in Hani terraced fields, screw fields and dry farming terraced fields.